c.f. https://github.com/kobolabs/Kobo-Reader/issues/105

Little blue light staying put and nothing launches, complete system hang.
Why? It is a pure mystery, my friend.

This is a Secondary Program Loader initrd for InkBox. It permits you to switch between Nickel and InkBox at boot by kexec'ing a new kernel from userspace. Only Libra is supported currently, because kexec is actually reliable there.